65 lines
2.7 KiB
C++
65 lines
2.7 KiB
C++
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/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// Created by raver119 on 20.12.17.
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//
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#include <ops/declarable/helpers/matmul.h>
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namespace nd4j {
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namespace ops {
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namespace helpers {
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template <typename X, typename Y, typename Z>
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void __matmul(NDArray *vA, NDArray *vB, NDArray *vC, int transA, int transB, double alpha, double beta) {
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CBLAS_TRANSPOSE tA = (CBLAS_TRANSPOSE) transA;
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CBLAS_TRANSPOSE tB = (CBLAS_TRANSPOSE) transB;
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int M = vA->sizeAt(0);
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int N = vB->sizeAt(1);
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int K = vA->sizeAt(1);
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int ldA = transA == CblasNoTrans ? M : K;
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int ldB = transB == CblasNoTrans ? K : N;
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int ldC = M;
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auto A = reinterpret_cast<X *>(vA->buffer());
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auto B = reinterpret_cast<Y *>(vB->buffer());
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auto C = reinterpret_cast<Z *>(vC->buffer());
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PRAGMA_OMP_PARALLEL_FOR_SIMD_COLLAPSE(2)
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for (int m = 0; m < M; ++m) {
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for (int n = 0; n < N; ++n) {
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Z c_mnp = 0;
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for (int k = 0; k < K; ++k)
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c_mnp += (Z) A[tA == CblasNoTrans ? (m + k * ldA) : (m * ldA + k)] * (Z) B[tB == CblasNoTrans ? (k + n * ldB) : (k * ldB + n)];
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C[m + n * ldC] = (Z) alpha * (Z) c_mnp + (Z) beta * (Z) C[m + n * ldC];
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}
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}
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}
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void _matmul(nd4j::LaunchContext * context, NDArray *vA, NDArray *vB, NDArray *vC, int transA, int transB, double alpha, double beta) {
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BUILD_TRIPLE_SELECTOR(vA->dataType(), vB->dataType(), vC->dataType(), __matmul, (vA, vB, vC, transA, transB, alpha, beta), LIBND4J_TYPES, LIBND4J_TYPES, LIBND4J_TYPES);
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}
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BUILD_TRIPLE_TEMPLATE(template void __matmul, (NDArray *A, NDArray *B, NDArray *C, int transA, int transB, double alpha, double beta), LIBND4J_TYPES, LIBND4J_TYPES, LIBND4J_TYPES);
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}
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}
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}
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